· Private foundation
Trini and OC Mendenhall Foundation
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k2 grants · $5k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| Christian Community Service - CCSC | $10,000 |
| Archdiocese of Galveston - Houston | $3,000 |
| Latin Women's Initiative - Giving Heart | $2,125 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY17–23, $164k) land where the poverty rate runs at 16%, against an area that typically sits at 12%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
29 repeat relationships — 3 still active in FY2024, 26 since wound down.
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- LCLEGACY COMMUNITY HEALTH SERVICES INC4× · 2019–2022 · $200k · revenue +140%
- CACHILD ADVOCATES INC6× · 2017–2022 · $82k · revenue +12%
- CHCOVENANT HOUSE TEXAS3× · 2019–2021 · $60k · revenue +3%
Funded once
- HCHarris County Hospital District Foundationone grant, 2022 · $25k · revenue -80%
- CCCATHOLIC CHARITIES OF THE ARCHDIOCESE OF GALVESTON - HOUSTONgraduatedone grant, 2018 · $25k · revenue +51%
- HCHOUSTON'S CHARITY FOR CHILDREN INCgraduatedone grant, 2018 · $11k · revenue +49%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
Plant, protect and promote trees all over the greater Houston area.
The Health Museum is an innovative science center that provides an interactive and entertaining experience for all ages, promotes understanding and appreciation of the human body, mind, and spirit, and inspires a lifelong commitment to…
CHRISTUS Foundation for HealthCare is dedicated to extending the healing ministry of Jesus Christ, continuing the legacy of the Congregation of the Sisters of Charity of the Incarnate Word through the promotion of health and welfare to…
The mission of Breakthrough Houston (BTH) is to work with highly motivated students to achieve post-secondary success and empower aspiring leaders to become the next generation of educational advocates.
The mission of the Houston Museum of Natural Science shall be to preserve and advance the general knowledge of natural science; to enhance in individuals the knowledge of and delight in natural science and related subjects; and to maintain…
The mission of Family Service Center of Houston and Harris County (Family Houston) is to create a stronger community for tomorrow by helping individuals and families meet the challenges they face today. We help others help themselves.
The Houston Area Women's Center (HAWC) works to end domestic and sexual violence and supports all in building safe and healthy lives through advocacy, counseling, education, shelter, and support services.
To enrich life through discovery, education, and the conservation of plants and the natural environment.
Mission: this organization is part of the methodist hospital, doing business as houston methodist hospital, whose mission is: to provide high quality, cost-effective health care that delivers the best value to the people we serve in a…
Our mission is to provide high quality and caring services to promote healthy people and communities.
Memorial hermann health system is a nonprofit, values-driven, community-owned health system dedicated to improving health. our vision is to create healthier communities, now and for generations to come. our values are community,…
To provide high quality, cost-effective health care that delivers the best value to the people we serve in a spiritual environment of caring in association with internationally recognized teaching and research.
For reference, the grantee most central to the portfolio’s shape is El Centro De Corazon and the most unlike its peers is The Museum of Fine Arts Houston. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 41 years old; the field is 11. You back the established end — and your money leans older still.
The field is 30% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 19% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
28 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 28 of the 50 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds LEGACY COMMUNITY HEALTH SERVICES INC ↗
- Who funds CHILD ADVOCATES INC ↗
- Who funds COVENANT HOUSE TEXAS ↗
- Who funds Small Steps Nurturing Center ↗
- Who funds RAISEUP FAMILIES ↗
- Who funds Crime Stoppers of Houston Inc ↗
- Who funds Harris County Hospital District Foundation ↗
- Who funds Camp For All Foundation ↗
- Who funds PRO-VISION INC ↗
- Who funds CATHOLIC CHARITIES OF THE ARCHDIOCESE OF GALVESTON - HOUSTON ↗
- Who funds American Heart Association Inc ↗
- Who funds THE WOMEN'S HOME ↗
- Who funds Houston Golf Association Inc ↗
- Who funds University of St Thomas ↗
- Who funds HOUSTON'S CHARITY FOR CHILDREN INC ↗
- Who funds THE MUSEUM OF FINE ARTS HOUSTON ↗
- Who funds STAR OF HOPE MISSION ↗
- Who funds Contemporary Arts Museum Houston ↗
- Who funds University of Houston Foundation ↗
- Who funds AVDA ↗
- Who funds EL CENTRO DE CORAZON ↗
- Who funds San Francisco Nativity Academy ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Greater Houston Community Foundation · Shell USA Company Foundation · Strake Foundation · Marek Family Foundation · Albert & Ethel Herzstein Charitable Foundation · Harry S & Isabel C Cameron Foundation Sentinel Trust Company · Mechia Foundation · The Brown Foundation Inc · The Alkek and Williams Foundation · Vivian L Smith Foundation · Charity Guild of Catholic Women of Harris County Inc · The Elkins Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Trini and OC Mendenhall Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
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Find your warmest path to Trini and OC Mendenhall Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.